Island
Alcatraz
The strongest visit window for Alcatraz is May through April.
Island
The strongest visit window for Alcatraz is May through April.
National Monument
The strongest visit window for Cabrillo is May through April.
National Monument
The strongest visit window for Castle Mountains is February through March.
National Park
The strongest visit window for Channel Islands is May through April.
National Monument
The strongest visit window for César E. Chávez is July through August.
National Park
The strongest visit window for Death Valley is February through March.
National Monument
The strongest visit window for Devils Postpile is July through August.
National Historic Site
The strongest visit window for Eugene O'Neill is July through August.
Island
The strongest visit window for Alcatraz is May through April.
National Monument
The strongest visit window for Cabrillo is May through April.
National Monument
The strongest visit window for Castle Mountains is February through March.
National Park
The strongest visit window for Channel Islands is May through April.
National Monument
The strongest visit window for César E. Chávez is July through August.
National Park
The strongest visit window for Death Valley is February through March.
National Monument
The strongest visit window for Devils Postpile is July through August.
National Historic Site
The strongest visit window for Eugene O'Neill is July through August.
National Historic Site
The strongest visit window for Fort Point is May through April.
National Recreation Area
The strongest visit window for Golden Gate is July through August.
National Historic Site
The strongest visit window for John Muir is July through August.
National Park
The strongest visit window for Joshua Tree is February through March.
National Historic Trail
The strongest visit window for Juan Bautista de Anza is July through August.
National Park
The strongest visit window for Lassen Volcanic is July through August.
National Monument
The strongest visit window for Lava Beds is April through October.
National Historic Site
The strongest visit window for Manzanar is July through August.
National Preserve
The strongest visit window for Mojave is February through March.
National Monument
The strongest visit window for Muir Woods is May through April.
National Park
The strongest visit window for Pinnacles is July through August.
National Seashore
The strongest visit window for Point Reyes is July through August.
National Memorial
The strongest visit window for Port Chicago Naval Magazine is May through April.
National Historical Park
The strongest visit window for Rosie the Riveter/World War II Home Front is July through August.
National Historical Park
The strongest visit window for San Francisco Maritime is May through April.
National Recreation Area
The strongest visit window for Santa Monica Mountains is May through April.
National Parks
The strongest visit window for Sequoia & Kings Canyon is July through August.
National Monument
The strongest visit window for Tule Lake is July through August.
National Recreation Area
The strongest visit window for Whiskeytown is July through August.
National Park
The strongest visit window for Yosemite is July through August.